ok so if i understand this chart correctly i could stroke my 360 out to a 420 with out having to get it bored, ive seen a lot of dakota with 408 strokers which would have to be bored .030 over, but wouldnt it just be easier to go with the 420 and only have to swap rods?

displacementchart-2.jpg?t=1241471791

 

Any stroker kit can be installed without boring the cylinders. There is nothing special about the example you mentioned. For example, the kit used for a "408 stroker" would be a "402 stroker" if done with a stock bore size. The "420 stroker" you are talking about would be a "427 stroker" if bored .030" over.

People normally bore the cylinders (.030" over is common) of used blocks while they are torn down / doing a rebuild, as standard practice, because it gives a small increase in displacement, but more importantly, it gives a like-new fresh start with the block. If starting with a brand new block there would be no reason to bore it (unless you are dead set on having those extra few cubes).

 

got ya, thanks

 

Some longer strokes crankshaft do require machine work to clearance the longer strokes.

 

in my personal opinion....you have to tear it down completely to put the stoker kit on any ways so while you are there why not just spend the extra couple bucks to take it to a machine shop and take about 70k miles off the odometer. believe it or not when it comes to resale value, just adding s kit actually takes away from the value. if you bore it .030 over it adds sufficient value enough to make it worth spending the couple hundred bucks or so. but like i said, that is my personal opinion.

 

that does make more since, if its taken out might as well go all the way